Skamol insulating fire bricks

Hi All ;  
Took a nice drive up to Big Fork area of Flathead lake yesterday. Came home with 50 brand new Skamol insulating bricks  @ $1 each!
There are literally  thousands and thousands left for the next lucky scientist to score!  

Interesting fact about these bricks,  they are mainly made of Diatomaceous earth ! Who would have thought!

I bought 50 of these , I really do not know if I need that many or more, but the price was rite and it was a rare sunny day to go for a drive.
Besides if I do need more, they are certainly available.

I would love to have 100 of those if I could get my hands on them.  Good score.